71428650 has 48 divisors (see below), whose sum is σ = 182869248. Its totient is φ = 18432000.

The previous prime is 71428631. The next prime is 71428691. The reversal of 71428650 is 5682417.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3031 + ... + 12330.

It is an arithmetic number, because the mean of its divisors is an integer number (3809776).

Almost surely, 2^71428650 is an apocalyptic number.

71428650 is an abundant number, since it is smaller than the sum of its proper divisors (111440598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71428650 is a wasteful number, since it uses less digits than its factorization.

71428650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15407 (or 15402 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 71428650 is about 8451.5471956323. The cubic root of 71428650 is about 414.9134188179.

The spelling of 71428650 in words is "seventy-one million, four hundred twenty-eight thousand, six hundred fifty".